[Test Gap][Snappi]: Support For LACP Testcases On Single DUT Multi-asic And Multi DUT Platforms

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Overview

The Snappi testcases are designed to provide comprehensive coverage of various network protocols, including BGP and LACP. However, the current implementation of these testcases has a significant limitation - they are not compatible with single-DUT multi-asic and multi-DUT platforms. This test gap affects the overall coverage and reliability of the Snappi testcases, making it essential to address this issue.

Is it platform specific

The test gap is not specific to a particular platform, but rather a generic issue that affects multiple platforms. The current implementation of the Snappi testcases is not flexible enough to accommodate different platform configurations, making it necessary to develop a more generic approach.

Importance or Severity

The severity of this test gap is medium, as it affects the coverage of BGP and LACP testcases on single-DUT multi-asic and multi-DUT platforms. While it is not a critical issue, it is essential to address this gap to ensure that the Snappi testcases provide comprehensive coverage of various network protocols.

Description of the test gap

The current implementation of the Snappi testcases for BGP and LACP is based on a specific configuration that is not compatible with single-DUT multi-asic and multi-DUT platforms. The testcases remove the existing configuration on the interfaces and re-add them based on the test, which is not feasible on these platforms. For example, the test_lacp_timers_effect.py testcase calls the lacp_dut_helper.py helper file, which contains the duthost_bgp_config function. This function removes the existing IP configuration on the interfaces and re-adds it, which is not possible on single-DUT multi-asic and multi-DUT platforms.

for i in range(0, port_count):
    intf_config = (
        "sudo config interface ip remove %s %s/%s \n"
        "sudo config interface ip remove %s %s/%s \n"
    )

tx_portchannel_config = (
    "sudo config portchannel add PortChannel1 \n"
    "sudo config portchannel member add PortChannel1 %s\n"
    "sudo config interface ip add PortChannel1 %s/%s\n"
    "sudo config interface ip add PortChannel1 %s/%s\n"
)

To address this test gap, it is essential to develop a generic approach that can support different platform configurations. This can be achieved by introducing a more flexible configuration mechanism that can accommodate various platform-specific requirements.

Affected Area

The affected area is the Snappi testcases for BGP and LACP, which are not compatible with single-DUT multi-asic and multi-DUT platforms.

Impact of missing tests and proposed tests

The impact of missing tests is that there is no coverage for BGP and LACP on single-DUT multi-asic and multi-DUT platforms. This means that the Snappi testcases are not comprehensive, and there is a risk of missing critical issues on these platforms. To address this, it is proposed to develop a generic approach that can support different platform configurations, ensuring that the Snappi testcases provide comprehensive coverage of various network protocols.

Proposed Solution

To address the test gap, the following proposed solution can be implemented:

  1. Introduce a generic configuration mechanism: Develop a more flexible configuration mechanism that can accommodate various platform-specific requirements. This can be achieved by introducing a configuration file that can be customized for different platforms.
  2. Use platform-specific helper functions: Create platform-specific helper functions that can be used to configure the interfaces and add IP addresses. These functions can be customized for different platforms, ensuring that the testcases are compatible with various platforms.
  3. Modify the testcases to use the generic configuration mechanism: Modify the testcases to use the generic configuration mechanism and platform-specific helper functions. This will ensure that the testcases are compatible with single-DUT multi-asic and multi-DUT platforms.
  4. Test the modified testcases: Test the modified testcases on single-DUT multi-asic and multi-DUT platforms to ensure that they are working as expected.

By implementing the proposed solution, it is possible to address the test gap and ensure that the Snappi testcases provide comprehensive coverage of various network protocols on single-DUT multi-asic and multi-DUT platforms.

Benefits of the Proposed Solution

The proposed solution has several benefits, including:

  • Improved coverage: The proposed solution ensures that the Snappi testcases provide comprehensive coverage of various network protocols on single-DUT multi-asic and multi-DUT platforms.
  • Increased flexibility: The proposed solution introduces a generic configuration mechanism that can accommodate various platform-specific requirements, making it easier to add support for new platforms.
  • Reduced maintenance: The proposed solution reduces the maintenance burden by introducing a more flexible configuration mechanism that can be customized for different platforms.

Conclusion

Q&A

Q: What is the current limitation of the Snappi testcases for BGP and LACP?

A: The current implementation of the Snappi testcases for BGP and LACP is not compatible with single-DUT multi-asic and multi-DUT platforms. The testcases remove the existing configuration on the interfaces and re-add them based on the test, which is not feasible on these platforms.

Q: What is the impact of missing tests for BGP and LACP on single-DUT multi-asic and multi-DUT platforms?

A: The impact of missing tests is that there is no coverage for BGP and LACP on single-DUT multi-asic and multi-DUT platforms. This means that the Snappi testcases are not comprehensive, and there is a risk of missing critical issues on these platforms.

Q: What is the proposed solution to address the test gap?

A: The proposed solution is to introduce a generic configuration mechanism that can accommodate various platform-specific requirements. This can be achieved by introducing a configuration file that can be customized for different platforms. Additionally, platform-specific helper functions can be created to configure the interfaces and add IP addresses.

Q: How will the proposed solution improve the coverage of the Snappi testcases?

A: The proposed solution will improve the coverage of the Snappi testcases by ensuring that they are compatible with single-DUT multi-asic and multi-DUT platforms. This will provide comprehensive coverage of various network protocols on these platforms.

Q: What are the benefits of the proposed solution?

A: The proposed solution has several benefits, including:

  • Improved coverage: The proposed solution ensures that the Snappi testcases provide comprehensive coverage of various network protocols on single-DUT multi-asic and multi-DUT platforms.
  • Increased flexibility: The proposed solution introduces a generic configuration mechanism that can accommodate various platform-specific requirements, making it easier to add support for new platforms.
  • Reduced maintenance: The proposed solution reduces the maintenance burden by introducing a more flexible configuration mechanism that can be customized for different platforms.

Q: How will the proposed solution be implemented?

A: The proposed solution will be implemented by modifying the testcases to use the generic configuration mechanism and platform-specific helper functions. This will ensure that the testcases are compatible with single-DUT multi-asic and multi-DUT platforms.

Q: What is the expected outcome of the proposed solution?

A: The expected outcome of the proposed solution is that the Snappi testcases will provide comprehensive coverage of various network protocols on single-DUT multi-asic and multi-DUT platforms. This will ensure that the testcases are reliable and accurate, and that critical issues are not missed on these platforms.

Frequently Asked Questions

Q: What is the current status of the Snappi testcases for BGP and LACP?

A: The current status of the Snappi testcases for BGP and LACP is that they are not compatible with single-DUT multi-asic and multi-DUT platforms.

Q: What is the expected timeline for implementing the proposed solution?

: The expected timeline for implementing the proposed solution is [insert timeline].

Q: Who will be responsible for implementing the proposed solution?

A: The person responsible for implementing the proposed solution is [insert name].

Q: What are the next steps for implementing the proposed solution?

A: The next steps for implementing the proposed solution are:

  • Modify the testcases to use the generic configuration mechanism: This will ensure that the testcases are compatible with single-DUT multi-asic and multi-DUT platforms.
  • Create platform-specific helper functions: This will provide a more flexible configuration mechanism that can be customized for different platforms.
  • Test the modified testcases: This will ensure that the testcases are working as expected on single-DUT multi-asic and multi-DUT platforms.

Conclusion

In conclusion, the test gap in the Snappi testcases for BGP and LACP on single-DUT multi-asic and multi-DUT platforms is a significant issue that affects the overall coverage and reliability of the testcases. The proposed solution addresses this issue by introducing a generic configuration mechanism and platform-specific helper functions, ensuring that the testcases are compatible with various platforms. By implementing the proposed solution, it is possible to improve the coverage, increase flexibility, and reduce maintenance burden of the Snappi testcases.